KR101154253B1

KR101154253B1 - Flat type speaker having voice coil plate of three dimensional track type

Info

Publication number: KR101154253B1
Application number: KR1020100130626A
Authority: KR
Inventors: 김동만
Original assignee: 주식회사 엑셀웨이
Priority date: 2010-12-20
Filing date: 2010-12-20
Publication date: 2012-06-13
Also published as: WO2012086931A1

Abstract

PURPOSE: A flat speaker with a voice coil plate of a three dimensional track type is provided to transfer much sound energy by connecting a thin film plate having a damper function between a voice coil and a vibration plate. CONSTITUTION: A vibration plate(120) is located on the top of a plate speaker. A thin film metal plate(130) is located on a lower portion of the vibration plate. A voice coil plate(140) is attached to a lower portion of the thin film metal plate. A magnetic is combined with a lower portion of the voice coil plate. The vibration plate serves as a sound generator of a speaker. The voice coil plate forms a thin film into an oval shape, in other word, three dimensional track shape. The magnetic is composed of a magnet(152) located in a center portion, a plate formed on an upper side of the magnet, and a yoke body(153). The yoke body has a shape for constituting a magnetic circuit between the voice coil plate and the magnet.

Description

Flat type speaker with three-dimensional track type voice coil plate {FLAT TYPE SPEAKER HAVING VOICE COIL PLATE OF THREE DIMENSIONAL TRACK TYPE}

The present invention relates to a flat panel speaker, and more particularly, to a flat speaker that is thin and thin using one bar magnet and a three-dimensional track type voice coil plate.

The speaker includes a voice coil and a diaphragm interposed between the magnets, and generates sound by vibrating the diaphragm by the movement of the voice coil.

In the flat speaker, magnets are arranged at regular intervals on both sides of the flat voice coil and its sides to generate organic electromotive force according to Flaming's left-hand law and Lorentz's principle, forming a frequency according to the voice, and the frequency vibrates the diaphragm Is reproduced.

The voice coil is spirally wound or printed in an elliptical shape on one side or both sides of a plate-shaped coil base to form a voice coil plate.

The vibration plate is attached to the upper end of the voice coil plate in the longitudinal direction, and the vibration plate vibrates according to the movement of the voice coil plate to generate sound.

In addition, the voice coil formed on the voice coil plate is bonded to both terminals of the base frame in which the + and − lead wires form an appearance to form a circuit.

However, the conventional flat speaker (or rectangular speaker) has a form in which a magnet is composed of a pair and a voice coil plate is inserted between the magnetic gaps between the magnets, so that there is a limit in forming a thin flat speaker.

In addition, the conventional voice coil plate is bonded to the diaphragm in an upright state, so that the adhesion area with the diaphragm is small and thus has a limit of vibration energy transfer.

In addition, since the lead wire formed on the voice coil plate is bonded to the base frame, the voice coil plate moves up and down, but the base frame is fixed, and thus, the bonding is often broken.

In addition, when connecting the lead wire of the voice coil plate to the terminal of the base frame in the process, it is usually connected by a soldering method using a silver wire, but this method has a problem of deteriorating the quality of the speaker.

An object of the present invention for solving the above-mentioned problems is to provide a flat speaker having a slim and thin structure by using a single bar magnet and a three-dimensional track type voice coil.

In addition, to reinforce the sound energy transfer of a slim and thin flat speaker, a flat speaker having a structure in which a thin film plate having a damper function is connected between a voice coil and a diaphragm is provided.

In addition, there is an additional object of eliminating the hassle of soldering the lead wire (silver wire) for the electrical connection from the voice coil to the terminal of the base frame to solve the problem of deterioration due to process shortening and lead wire connection.

According to an aspect of the present invention, there is provided a flat speaker having a three-dimensional track type voice coil plate, comprising: a diaphragm connected to a base frame by a damper and adhered to a voice coil and vibrated; Located at the bottom of the diaphragm and a thin film metal plate of the thin film; A three-dimensional track type voice coil plate having an oval thin film structure, the upper end of which is bonded to the thin film metal plate, and wherein a magnet is inserted from below and the lower end is inserted between the magnet and the yoke body; And a magnetic body seated at the center of the magnet and formed of a yoke body having a predetermined distance between the magnet and the left and right sides thereof.

Herein, the thin film metal plate may be formed by forming an inner spline and an outer spline in a closed loop, and having a planar shape of 'U', and having a pair of left and right symmetry.

Here, the thin film metal plate may have a form in which the inner side is bent in a '-' shape.

Here, the outer spline of the thin film metal plate may be bonded to the base frame forming the outer surface of the flat speaker, and the inner spline of the thin film metal plate may be in contact with the diaphragm.

Here, the bent vertical surface portion of the thin film metal plate may be implemented to be inserted into the voice coil plate.

Here, both ends of the voice coil plate may be formed of an arc having the same radius as the inner arc of the thin film metal plate.

Here, the thin film metal plate is preferably a +,-power terminal portion is formed at the outer end based on the flat speaker.

According to the above-described configuration of the present invention, first, by using one bar magnet and three-dimensional track type voice coil, a slim and thin structure is possible, and second, by connecting a thin film plate having a damper function between the voice coil and the diaphragm. It is possible to transmit more sound energy, and thirdly, it is possible to provide a flat panel speaker that can eliminate the soldering process of the lead wire (silver wire) to solve the problem of deterioration due to process shortening and lead wire connection.

1 is a perspective view of a flat speaker having a three-dimensional track type voice coil plate according to the present invention.
FIG. 2 is a perspective view of the flat speaker in a state in which the base frame is not coupled to FIG. 1.
FIG. 3 is an exploded perspective view of FIG. 2. FIG.
FIG. 4 is a perspective view of the flat speaker in a state in which the diaphragm is not coupled to FIG. 1.
Figure 5 shows a perspective view of a thin film metal plate applied to a flat speaker having a three-dimensional track type voice coil plate according to the present invention.
6 is a perspective view of a coupling state of a diaphragm and a thin film metal plate in a flat speaker having a three-dimensional track type voice coil plate according to the present invention.
7 is a perspective view of the voice coil plate combined in the combined state of FIG.
8 is a perspective view of the magnetic body coupled in the coupled state of FIG.

Hereinafter, with reference to the accompanying drawings looks at the structure and effect of the flat speaker having a three-dimensional track type voice coil plate in the present invention.

1 is a perspective view of a flat speaker having a three-dimensional track type voice coil plate according to the present invention.

As shown in FIG. 1, the flat panel speaker 100 according to the present invention has a base frame 100 in which various components are seated and a power terminal hole 111 and a thin film metal plate fastening opening 112 are formed at both ends. The diaphragm 120 is bonded to the upper side.

FIG. 2 is a perspective view of a flat speaker in a state in which the base frame is not coupled to FIG. 1, FIG. 3 is an exploded perspective view of FIG. 2, and FIG. 4 is a perspective view of a flat speaker in which the diaphragm is not coupled in FIG. .

2 to 4, the flat panel speaker 100 according to the present invention, the diaphragm 120 is located at the top end, the thin film metal plate 130 is located below the diaphragm 120, the thin film metal plate The voice coil plate 140 is bonded to the lower portion 130, and the magnetic body 150 is coupled to the lower voice coil plate 140.

The diaphragm 120 may be made of pulp and resin as a main material as a part of the speaker.

The voice coil plate 140 is formed of a thin oval shape, that is, a three-dimensional track structure, and a voice coil is pattern-shaped on the surface of the voice coil plate 140.

The magnetic body 150 is a magnet 152 is located at the center, the plate 151, which is a pole piece is bonded to the upper surface of the magnet 152, the cross section is made of a yoke body 153 of the '' 'shape.

A predetermined gap is formed between both the yoke body 153 and the magnet 152 around the magnet 152, and the voice coil plate 140 is inserted into the gap.

The yoke body 153 has a shape for forming a magnetic circuit between the voice coil plate 140 and the magnet 152.

The groove formed by the magnet 152 and the yoke body 153 has a shape in which the lower part is closed, the upper part is opened, and penetrates in the longitudinal direction, and both scene sides of the voice coil plate 140 can vibrate vertically between the grooves. To be inserted without interference.

The voice coil plate 140 is used by attaching the voice coil of a conventional planar shape to a cross section or both sides of the voice coil plate, but in the present invention, the voice coil plate 140 is formed in a three-dimensional track type. Both scenes of the voice coil plate 140 are inserted to form a magnetic circuit in two grooves, and are configured to vibrate up and down according to the left law of flaming and the law of Lorentz.

The thin film metal plate 130 serves as a kind of leaf spring or damper. That is, the lower surface of the thin film metal plate 130 is bonded to the voice coil plate 140 to move up and down in conjunction with the vertical vibration of the voice coil plate 140, the upper surface of the thin film metal plate 130 is bonded to the vibration plate 120 It becomes a medium for transmitting sound energy from the voice coil plate 140 to the diaphragm 120.

The structure of the thin film metal plate 130 will be described in more detail with reference to FIG. 5. Figure 5 shows a perspective view of a thin film metal plate applied to a flat speaker having a three-dimensional track type voice coil plate according to the present invention.

The thin film metal plate 130 may be configured as a left and right pair, and the pair of thin film metal plates 130 have a structure that is physically separated from each other.

The thin film metal plate 130 has a substantially 'U' shaped structure, and the inner spline 131 and the outer spline 132 are connected to each other to form a closed loop.

The inner spline 131 is composed of a straight portion 131a and an arc portion 131b, and the straight portion 131a is bent in a '-' shape and has a '-' bending structure 134.

The vertical surface portion 134a of the inner spline 131 is a portion fitted into the long end surface of the voice coil plate 140, and the flat portion 134b of the inner spline 131 is bonded to the upper diaphragm 120 surface. The outer spline 132 is seated and bonded to the fastening opening 112 of the base frame 110, the power terminal 133 formed on the outer spline 132 is the power terminal hole 111 of the base frame 110 It is seated on and adhered to.

The power supply terminal 133 is formed on each of the thin film metal plates 130 and is inserted into and bonded to the power terminal hole 111 of the base frame 110, and the + and − wire portions of the voice coil are connected to each other.

A coupling structure diagram of the flat panel speaker having the above-described structure will be described with reference to FIGS. 6 to 8 in order.

6 is a perspective view of a coupling state of a diaphragm and a thin film metal plate in a flat speaker having a three-dimensional track type voice coil plate according to the present invention.

As shown, the thin film metal plate 130 is bonded to the lower portion of the diaphragm 120, and in detail, the flat portion 134b of the inner surface of the diaphragm 120 and the inner spline 131 of the thin film metal plate 130 is bonded. The pair of thin film metal plates 130 and the diaphragm 120 are bonded to each other at an optimal design position.

7 is a perspective view of the voice coil plate combined in the combined state of FIG.

In the coupled state as shown in FIG. 6, the voice coil plate 140 is coupled to the lower portion of the thin film metal plate 130, and in detail, the vertical surface portion 134b of the inner spline 131 is fitted to the outer long end surface of the voice coil plate 140. Is fastened.

8 is a perspective view of the magnetic body coupled in the coupled state of FIG.

In the coupled state as shown in FIG. 7, the magnetic body 150 is coupled to the lower portion of the voice coil plate 140, and in detail, the lower outer long end surface of the voice coil plate 140 is formed with the magnet 152 and the yoke body 153. To be positioned between the gaps.

6 to 8 are sequentially fastened and the base frame 110 is coupled to the outside thereof to have a structure as shown in FIG. 1.

The flat type speaker of the present invention described above is a remarkable improvement of the damper, lead wire, and center guide portion of a conventional general type speaker, and the structure of the flat type speaker can effectively reduce the thickness of the flat type speaker, thereby making it very thin and flat plate. It is possible to develop, manufacture and popularize a type speaker.

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, As will be understood by those skilled in the art. Therefore, it should be understood that the above-described embodiments are to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than the foregoing description, It is intended that all changes and modifications derived from the equivalent concept be included within the scope of the present invention.

100: flat panel speaker 110: bass frame
111: power terminal hole 112: fastening opening
120: diaphragm 130: thin film metal plate
131: inner spline 131a: straight portion
131b: arc part 132: outer spline
133: power supply terminal 134: 'b' character bending structure
134a: vertical surface portion 134b: flat portion
140: voice coil 150: magnetic body
151: plate 152: magnet
153: yoke

Claims

A vibrating plate connected to the base frame through a thin film metal plate, and vibrated by being bonded to the voice coil;
A thin film metal plate of a thin film positioned at a lower end of the diaphragm;
A three-dimensional track type voice coil plate having an oval thin film structure, the upper end of which is bonded to the thin film metal plate, and wherein a magnet is inserted from below and the lower end is inserted between the magnet and the yoke body;
And a magnet formed of a yoke body seated at the center of the magnet and having a predetermined distance between the magnet and the left and right sides thereof, wherein the magnet has a three-dimensional track type voice coil plate.

The method of claim 1,
The thin-film metal plate is a flat speaker having a three-dimensional track type voice coil plate formed of a pair of left and right inner splines and outer splines forming a closed loop, the plane of which has a 'U' shape and symmetrical pairs.

The method of claim 2,
The thin film metal plate is a flat speaker having a three-dimensional track type voice coil plate having an inner spline bent in the form of a 'b'.

The method of claim 3,
The outer spline of the thin film metal plate is bonded to the base frame forming the appearance of the flat speaker,
And an inner spline of the thin film metal plate is in contact with the diaphragm.

The method of claim 3,
Flat panel speaker having a three-dimensional track type voice coil plate, the surface portion bent by the letter "A" of the thin film metal plate is inserted into the voice coil plate.

The method of claim 3,
And both ends of the voice coil plate are circular arcs having the same radius as the arc of the inner spline of the thin film metal plate.

The method of claim 1,
The thin-film metal plate is a flat speaker having a three-dimensional track type voice coil plate, the power terminal portion of the +,-is formed at the outer end based on the flat speaker.